From: "Martin K. Petersen" <martin.petersen@oracle.com>
To: "Gao\, Yunpeng" <yunpeng.gao@intel.com>
Cc: "linux-btrfs\@vger.kernel.org" <linux-btrfs@vger.kernel.org>,
"linux-ext4\@vger.kernel.org" <linux-ext4@vger.kernel.org>,
"linux-fsdevel\@vger.kernel.org" <linux-fsdevel@vger.kernel.org>,
"linux-mmc\@vger.kernel.org" <linux-mmc@vger.kernel.org>
Subject: Re: Is it possible for the ext4/btrfs file system to pass some context related info to low level block driver?
Date: Tue, 03 May 2011 09:43:29 -0400 [thread overview]
Message-ID: <yq1mxj32932.fsf@sermon.lab.mkp.net> (raw)
In-Reply-To: <CE761E84DADF2947A4AF22FB8D97A47358E28022@shsmsx501.ccr.corp.intel.com> (Yunpeng Gao's message of "Tue, 3 May 2011 10:44:07 +0800")
>>>>> "Yunpeng" == Gao, Yunpeng <yunpeng.gao@intel.com> writes:
Yunpeng> So, my question is, is there any plan or discussion on
Yunpeng> supporting this feature (passing data type info to low level
Yunpeng> block device driver) on file system developments? Especially
Yunpeng> for ext4/btrfs, since now they are very hot in Linux? Thanks.
Yes, I have been working on some changes that allow us to tag bios and
pass the information out to storage. These patches have been on the back
burner for a while due to other commitments. But I'll dig them out and
post them later. We just discussed them a couple of weeks ago at the
Linux Storage Workshop.
In the meantime: Can you point me to the relevant eMMC stuff so I can
see how many tiers or classes we have to work with there?
--
Martin K. Petersen Oracle Linux Engineering
next prev parent reply other threads:[~2011-05-03 13:43 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-05-03 2:44 Is it possible for the ext4/btrfs file system to pass some context related info to low level block driver? Gao, Yunpeng
2011-05-03 4:10 ` Kyungmin Park
2011-05-04 10:31 ` Gao, Yunpeng
2011-05-03 13:43 ` Martin K. Petersen [this message]
2011-05-04 11:45 ` Gao, Yunpeng
2011-05-04 14:51 ` Andreas Dilger
2011-05-05 18:10 ` Matthew Wilcox
2011-05-05 20:11 ` Andreas Dilger
2011-05-09 5:50 ` Gao, Yunpeng
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